This page explains how Steven Lowry (USATT# 7907)'s rating went from 2180 to 2180 at the Pottsgrove TTC event from 16 Aug 2007. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.